Kanye West was hospitalized in Los Angeles Monday afternoon, possibly for exhaustion and sleep deprivation, People reports. The news broke after West canceled the rest of his Saint Pablo tour. According to TMZ, West was at the home of his trainer, Harley Pasternak, and someone called 911, saying the rapper was acting “erratically.” In a 911 call obtained by TMZ, the dispatcher can be heard classifying the situation as a “psychiatric emergency.”

The hospitalization comes two days after West went on a rant during a concert in Sacramento before ending the show early. Among other things, he said Beyoncé wouldn't perform in the MTV VMAs unless she won Video of the Year over the other contenders, including West himself. “I’m not always gonna say things the perfect way, but right now I’m gonna say how I feel,” he said.

A source tells People that West is fine and went to the hospital Monday “at will, under the advice of his physician.” Right now, there aren't further details about exactly why West was hospitalized, or confirmation from his representatives whether exhaustion was indeed the cause.

Though he can’t comment on West’s case specifically, a chronic lack of sleep can "absolutely" cause psychiatric episodes, board-certified sleep medicine doctor and neurologist W. Christopher Winter, M.D., of Charlottesville Neurology and Sleep Medicine, and author of the upcoming book, The Sleep Solution: Why Your Sleep is Broken and How to Fix It, tells SELF. “Chronic sleep deprivation can cause hallucinations, disorganized thinking, paranoia, manic-like outbursts, and frank psychotic breaks," Winter says. "Sleep deprivation really has negative effects on your brain." He cites the case of Peter Tripp, a DJ who stayed awake for 201 hours in 1959 as part of a radio stunt. Tripp hallucinated during the stunt and he suffered on a psychiatric level afterward. For a long time, he thought he was an imposter of himself, Winter says.

You don't have to go such extremes of sleep deprivation to suffer negative effects, says Mike Dow, Psy. D., psychotherapist and author of The Brain Fog Fix. He cites a 2005 University of Pennsylvania experiment that found people who slept about six hours for multiple nights in a row had the same performance deficits as subjects who had been totally deprived of sleep for two nights.

"Just six hours of sleep a night for two nights starts to cause severe deficits," Dow tells SELF. "Sleep four hours for three nights in a row, and you may start to venture into 'loopy' territory." That can include memory problems, delayed reaction, impulsivity, emotional instability, inability to recognize emotions in others' faces, and inability to handle disappointment, he says. At that point, the part of your brain that puts the brakes on urges—the prefrontal cortex—isn't functioning well, impacting long-term planning, judgement, and impulse control. "A well-rested, adult brain can consider long-term consequences; the exhausted brain has a diminished capacity to put these brakes on," he says.

Women’s health expert Jennifer Wider, M.D., tells SELF that sleep deprivation can also cause headaches, cause poor vision, and slow your motor coordination. Wider points to a 2013 Gallup poll that found that nearly 40 percent of Americans get fewer than the recommended minimum seven hours of sleep a night, putting a lot of people at risk of feeling the effects from lack of sleep.

Lack of sleep can also spark a vicious cycle that only gets worse with time. Sleep deprivation can lead to exhaustion, which the Mayo Clinic defines as "a nearly constant state of weariness that develops over time and reduces your energy, motivation, and concentration." Someone who is sleep deprived may nod off for an hour, but their brain won't perceive it normally because it’s in such a sleep debt. A person in that situation won't actually feel rested and can end up repeating this pattern of poor sleep quality. “Then, anxiety builds up, which is always a big problem—usually the big underpinning of sleep issues is anxiety about life," Winter says. That's another way sleep deprivation can impact a person’s mood as well as their ability to make good decisions, Winter says.

Winter notes that cumulative lack of sleep is the big issue. While you may feel off after having one bad night of sleep, it’s really repeated sleep deprivation that can throw you. “This doesn’t happen overnight,” he says. “But when it builds up, it’s just a nightmare on 20 different fronts,” he says. Winter says a good night of sleep after a period of bad sleep may not totally fix the issue, but it can make a person more functional.

West had reportedly almost quit his tour a few times due to exhaustion, according to E! News, so this may have been escalating for some time. He's currently doing better, sources say.

To lower the odds this will happen to you, Winter says it’s smart to establish good sleep practices. That includes not pushing yourself too hard, going easy on your caffeine intake (especially in the hours leading up to bedtime), and having a plan for what happens if you get into bed and can’t sleep. If you find that you regularly lie in bed and can’t sleep, try to think about resting—lying in bed with your eyes closed and thinking positive thoughts—rather than feeling pressure to actually sleep.

If you get a bad night’s sleep, Winter recommends taking a nap the next day and meditating if you can, since the latter has been found to have sleep-like benefits for your brain.

And if all else fails, reach out for help. “If you suffer from sleeping issues, get them addressed by a professional so the sleep deprivation doesn't become cumulative,” Wider says.

Updated 4:30 P.M.: This post has been updated with the latest on West’s condition, and to include quotes from Mike Dow, Psy. D.